Some features of PeakHour:
Watch your use of the Internet in real time.
Will help determine the optimal location of your wireless access point for maximum performance or eliminate slow WiFi.
Problems or slowdown with Internet performance, search and elimination
Check your provider
Monitor the performance of networked and connected devices: NAS, servers and other network devices.
PeakHour Remote: Access PeakHour from anywhere! From any device, point a (modern) browser at the Mac running PeakHour to see a real-time view of your targets and usage. Add to your phone or tablet’s home screen for a fast, web-based app available at the tap of a button.
All new First Time Setup: PeakHour 4 includes a brand new, simplified setup wizard to make it easier to get the most out of it. By default, First Time Setup will try to find your UPnP devices, enable SNMP and monitor your local Mac and set up monitoring of your Internet connection.
Connection Quality: You can add now a new type of monitor: Connection Quality. This type of monitoring works by regularly pinging a target on the Internet (either the other side of your Internet conneciton or a specific host on the Internet – i.e. netflix.com). By default, First Time Setup will add a Connection Quality monitor for your Internet connection.
To monitor your local Mac interfaces with PeakHour, just enable the checkbox in First Time Setup or choose ‘Monitor This Mac’ from the PeakHour menu to bring up the wizard separately.
Monitoring other Macs on your network has also never been easier. PeakHour Enabler now uses iCloud to sync your Mac’s information to PeakHour; adding them now takes just a few clicks.
Dark Mode: PeakHour now has a cool new look if Dark Mode is enabled in System Preferences. It can also be enabled under Preferences > Display.
The main PeakHour window is now resizable horizontally, allowing you to increase the horizontal width to see more of the real-time, scrollable graph.
Targets can now be manually enabled and disabled.
PeakHour can now track daily usage quotas, as well as monthly.
Redesigned primary Preferences UI.
Improved SNMPv3 support.
Full macOS Sierra support.
Much of PeakHour is now written in Swift, resulting in better performance and stability.
Lots of other enhancements and fixes.

USES
Monitor your Internet usage.
Monitor the speed and quality of your Internet connection.
Help determine the optimum placement of your Wireless Access Point for maximum performance or troubleshoot slow WiFi.
Track how much Internet data you’re using to make sure you don’t go over your monthly allowance.
Help troubleshoot Internet performance problems and slowdowns.
Check your ISP is providing the speed and quality you’re paying for.
Monitor the performance of your network and connected devices: NAS, servers and other network devices.